[slacka]

If it's demonstrably not true, why is it then that multiple reports of mail going into SPAM folder stop coming in, once I setup SPF and DKIM? While it's true that reverse DNS is probably a bigger factor. Not having these 2 setup is going to increase your odds of ending up in the SPAM mailbox.

[spc476]

I have reverse DNS and SPF, but not DKIM and I don't have that many issues getting my email delivered. I did have issues with AOL, but once I registered as the contact for my IP address with them, those issues went away. I've also had one or two issues with GMail over the years, but last I knew, it was okay (I normally don't deal with GMail addresses that much).

Then again, I've had my domain for 17 years, self hosting everything for 16 years (with the occasional IP change, but I think I've had the same IP now for almost ten years so go figure).

[thrownaway2424]

Existence of SPF and DKIM will not necessarily keep your message out of the "spam" folders, but absence of them will significantly increase the chances of being delivered there.